I myself was born beside a river - the Avon in Sarum. So when I first encountered New York's great harbor and the Hudson River as a teenager, and came to understand their historic canal and railroad links to the vast spaces of the Midwest, I felt both the thrill of a new adventure and a deep sense of homecoming.

I descend from both Philadelphia Quakers and Carolina colonists whose families were separated by the Revolutionary War. That helped give me insight into the agony of Patriots who, until the British government denied their claims, had always, like Ben Franklin himself, thought of themselves as free-born Englishmen.

Writing historical novels can be dangerous. We need to be as accurate and as fair about the historical record as we can be, at the same time as creating our fictional characters and, hopefully, telling a good story. The challenge is weaving the fiction into the history.